CR7BXA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Portugal Most frequent locator attributed to this token: IN51

Receiver-side FT8 activity involving CR7BXA, decoded by SO8OO in southeastern Poland. 353 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 17 UTC dates in the available aggregate history. Observed between 2026-07-09 and 2026-08-24.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 353 FT8 messages attributed to CR7BXA as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (63%), followed by 20 m (22%) and 10 m (15%). Most decodes (84%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

353

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 221 40m · 1 20m · 79 10m · 52

First attributed message: 2026-07-09
Last attributed message: 2026-08-24 19:54 UTC

Observed FT8 message patterns

Attributed sample: 353 messages
Active dates: 17 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -22 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 195, moderate (-15 to -9 dB) 125, strong (≥ -8 dB) 33.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with CR7BXA in decoded directed-looking exchanges:

7X2KF · Algeria ×2 DK7ZT · Fed. Rep. of Germany ×2 OK1HEH · Czech Republic ×2 DN9MAI · Fed. Rep. of Germany F1VEO · France G1PRX · England GW8DX · Wales IW1PPB · Italy PS7RW · Brazil CT3MD · Madeira Islands DB5AE · Fed. Rep. of Germany DG2XB · Fed. Rep. of Germany

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to CR7BXA

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: IN51 · 200 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,546 km (approx.)
Last such locator decoded: 2026-08-24 19:54 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	CR7BXA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 17:30	20m	- / -17	LZ2VQ	-10 / -	2	Partial capture
08-21 15:38	20m	-21 / -	R8KAW	- / -	3	Partial capture
08-16 20:59	20m	- / -14	EB3JT	-7 / -	8	✓ Closing fragment
08-16 20:42	80m	-24 / -20	9A4BP/P	-9 / -13	8	✓ Full exchange observed
08-14 21:06	20m	- / -11	9K2GR	-22 / -	2	Partial capture
08-14 20:59	20m	- / -12	US7UR	+1 / -	3	Partial capture
08-14 20:51	20m	- / -14	UR3HC	+2 / -	2	Partial capture
08-14 20:48	20m	- / -1	MI7RDK	-12 / -	4	Partial capture
08-14 20:11	20m	-15 / -	R6DZR	- / -13	2	Partial capture
08-14 19:44	20m	-16 / -	LZ1ZF	- / -6	16	✓ Closing fragment
08-14 19:40	20m	-13 / -	KJ5PTH	- / -	3	Partial capture
08-14 19:37	20m	-22 / -	YO8CRU	- / -8	2	Partial capture
08-14 19:32	20m	-19 / -	LA2VLA	- / -	3	Partial capture
08-14 19:09	20m	-12 / -	M1DVJ	- / -	4	Partial capture
08-14 18:38	20m	-21 / -15	SV1EAG	-17 / -	3	✓ Closing observed
08-14 16:14	20m	- / -19	7X2KF	-17 / -	5	Partial capture
08-14 15:57	20m	-14 / -	7X2KF	- / -20	5	Partial capture
08-14 15:43	20m	-20 / -	OH3CBN	- / -	3	Partial capture
08-14 15:26	20m	- / -18	EA3FN	-17 / -	2	✓ Closing fragment
08-14 14:20	20m	- / -16	E77WA	-14 / -	2	✓ Closing fragment
08-07 20:24	20m	-10 / -	CO6HLP	- / -	2	Partial capture
08-07 20:22	20m	-9 / -	OK1VVR	- / -	2	Partial capture
08-07 18:51	20m	-21 / -	ER3CT	- / -	6	Partial capture
08-07 18:46	20m	-23 / -	ER3CT	- / -	3	Partial capture
08-07 15:04	20m	- / -22	DG2XB	-16 / -	3	✓ Closing fragment
08-05 21:51	40m	- / -5	SP0DF	-12 / -	3	✓ Closing fragment
08-04 19:06	20m	- / -	CR7BUJ	-13 / -	2	Partial capture
08-04 18:37	20m	- / -	F4IIX	-18 / -	2	Partial capture
08-04 18:07	20m	- / -10	TC3CT	+3 / -	2	Partial capture
08-04 08:20	20m	-16 / -	A61DD	- / -	2	Partial capture
08-04 08:14	20m	-19 / -	VK2WW	- / -	3	Partial capture
08-03 14:00	20m	- / -20	UD8S	-20 / -	3	✓ Closing fragment
08-03 08:26	20m	-16 / -	IK4RVY	- / -	3	Partial capture
08-02 21:00	10m	-19 / -	DN9MAI	- / -7	3	✓ Closing fragment
08-02 20:50	10m	-19 / -	KR4EEH	- / -	7	Partial capture
08-02 20:48	10m	-16 / -	SQ9OUM	- / -	2	Partial capture
08-02 20:47	10m	-16 / -	PY4BSC	- / -	2	Partial capture
08-02 20:38	10m	-10 / -	MI0JZZ	- / -14	2	Partial capture
08-02 20:34	10m	-12 / -	PS7RW	- / 0	6	✓ Closing fragment
08-02 20:32	10m	-14 / -	G0ABI	- / -	3	Partial capture
08-02 20:26	10m	-15 / -	GW8DX	- / +9	3	✓ Closing fragment
08-02 20:23	10m	-13 / -	SP5DAA	- / -12	3	Partial capture
08-02 20:20	10m	-9 / -	8S7DL	- / -15	5	Partial capture
08-02 20:17	10m	-10 / -	OH5C	- / -	4	Partial capture
08-02 20:16	10m	-12 / -	G1PRX	- / -13	3	✓ Closing fragment
08-02 20:14	10m	0 / -	F1VEO	- / -5	3	✓ Closing fragment
08-02 14:48	20m	- / -15	IW2NEF	-16 / -	2	✓ Closing fragment
07-30 22:37	40m	- / -11	UR5SD	-2 / -	2	✓ Closing fragment
07-30 22:06	40m	- / -17	UT6HN	-10 / -	2	✓ Closing fragment
07-30 21:54	80m	-17 / -	EW8AAC	- / -	8	Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

20m

UTC    dB Audio  Message
210000  -9 1770  CR7BXA EB3JT JN01 (x7)
153845 -23 1858  R8KAW CR7BXA IN51 (x3)
155430 -19 1976  9H4CM CR7BXA IN51
172515 -11 2590  EA6EJ CR7BXA R-24
173000 -11 2588  CR7BXA LZ2VQ R-17 (x2)
195415 -13 1618  TA3ZZ CR7BXA IN51

80m

UTC    dB Audio  Message
215515 -17 1223  EW8AAC CR7BXA IN51 (x7)
204245  -5 1896  CR7BXA 9A4BP/P -20 (x2)
204400 -24 1897  9A4BP/P CR7BXA R-13
204415 -11 1896  CR7BXA 9A4BP/P -20
204430 -24 1898  9A4BP/P CR7BXA R-14
204445  -9 1896  CR7BXA 9A4BP/P -20
204600 -24 1897  9A4BP/P CR7BXA R-15
204615 -12 1896  CR7BXA 9A4BP/P RR73

40m

UTC    dB Audio  Message
195800  -8 1199  CR7BXA EW2ZC -25 (x3)
201330  -6 2308  CR7BXA 9A7BB -06 (x2)
220600  -8 2281  CR7BXA UT6HN -17 (x2)
222315 -16 2189  CR7BXA F1PBZ -13
222445  -9 2589  CR7BXA GM4CXF R+02
223730  -5 2502  CR7BXA UR5SD -11 (x2)
230615 -21 2027  CR7BXA RK4FAJ -17
215100 -10 2034  CR7BXA SP0DF -05 (x3)

10m

UTC    dB Audio  Message
204745 -16 1270  PY4BSC CR7BXA IN51
204845 -17 1340  SQ9OUM CR7BXA IN51 (x2)
205045 -22 1973  KR4EEH CR7BXA IN51 (x7)
205430 -18 1645  DN9MAI CR7BXA IN51 (x5)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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